| (19) |
 |
|
(11) |
EP 0 933 216 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
19.07.2000 Bulletin 2000/29 |
| (43) |
Date of publication A2: |
|
04.08.1999 Bulletin 1999/31 |
| (22) |
Date of filing: 03.02.1999 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
03.02.1998 JP 2232698
|
| (71) |
Applicant: Fuji Photo Film Co., Ltd. |
|
Kanagawa-ken (JP) |
|
| (72) |
Inventors: |
|
- Amano, Toshiaki c/o Alps Electric Co.,Ltd.
Tokyo (JP)
- Sugawara, Tatsuo c/o Alps Electric Co.,Ltd.,
Tokyo (JP)
- Hakkaku, Kunio c/o Fuji Photo Film Co.,Ltd.,
Tokyo (JP)
|
| (74) |
Representative: Klunker . Schmitt-Nilson . Hirsch |
|
Winzererstrasse 106
80797 München
80797 München (DE) |
|
| |
|
| (54) |
Apparatus for restoring ink jet recording head |
(57) There is disclosed an apparatus for restoring an ink jet recording head which can
securely recover the ink jet recording head from the ink non-ejection condition caused
by foreign particles or bubbles adhering inside the ink passage of an ejecting nozzle
and which can prevent unnecessary bubbles from generating in the ink jet recording
head. In restoring operation, in which foreign particles are discharged together with
ink from the ejecting nozzle by pressurizing the ink in an ink tank, an inner pressure
of an ink supply passage is adjusted to reach a set pressure value.